date:UTF-8 checks exist to keep custom date formats binary-safe by mattsu2020 · Pull Request #9972 · uutils/coreutils

mattsu2020 · 2026-01-01T10:39:40Z

new OutputEncoding enum, byte-preserving helpers, and UTF-8 checks exist to keep custom date formats binary-safe.

related
#9959

github-actions · 2026-01-01T10:59:50Z

GNU testsuite comparison:

Congrats! The gnu test tests/shuf/shuf-reservoir is no longer failing!
Congrats! The gnu test tests/sort/sort-stale-thread-mem is no longer failing!

sylvestre · 2026-01-13T12:26:27Z

i think something went wrong with the stack of commits

github-actions · 2026-01-13T12:56:31Z

GNU testsuite comparison:

Skipping an intermittent issue tests/shuf/shuf-reservoir (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/sort/sort-stale-thread-mem (passes in this run but fails in the 'main' branch)

codspeed-hq · 2026-01-14T10:39:34Z

Merging this PR will not alter performance

✅ 287 untouched benchmarks
⏩ 38 skipped benchmarks¹

_{Comparing mattsu2020:date_9959 (7e7edb1) with main (289d701)}

38 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

github-actions · 2026-01-14T10:46:52Z

GNU testsuite comparison:

Congrats! The gnu test tests/sort/sort-float is no longer failing!

sylvestre · 2026-01-17T10:36:26Z

+    Some(out)
+}
+
+fn write_formatted_output(


where is it used ?

https://github.com/mattsu2020/coreutils/blob/efe00675ef39a062aa4eeb311573b3efb5d37e88/src/uu/date/src/date.rs#L487

github-actions · 2026-01-17T11:08:35Z

GNU testsuite comparison:

GNU test failed: tests/tail/follow-name. tests/tail/follow-name is passing on 'main'. Maybe you have to rebase?

github-actions · 2026-01-17T11:21:00Z

GNU testsuite comparison:

GNU test failed: tests/tail/follow-name. tests/tail/follow-name is passing on 'main'. Maybe you have to rebase?

github-actions · 2026-02-18T10:27:19Z

GNU testsuite comparison:

GNU test failed: tests/misc/io-errors. tests/misc/io-errors is passing on 'main'. Maybe you have to rebase?
Skipping an intermittent issue tests/tty/tty-eof (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/cut/bounded-memory is no longer failing!

This commit removes the strict UTF-8 validation that was previously enforced on Unix systems when using custom format strings with the date command. Previously, if a format string contained invalid UTF-8 bytes and the locale was set to UTF-8, the command would fail with an error. Now, the command will always attempt to decode format strings in a byte-preserving manner, allowing non-UTF-8 format strings to work regardless of the locale setting. The change simplifies the behavior by removing the conditional UTF-8 validation logic and associated error handling, making the date command more permissive with format strings containing invalid UTF-8 sequences.

github-actions · 2026-02-18T10:41:30Z

GNU testsuite comparison:

GNU test failed: tests/head/head-write-error. tests/head/head-write-error is passing on 'main'. Maybe you have to rebase?
Skipping an intermittent issue tests/tail/follow-name (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/tty/tty-eof (passes in this run but fails in the 'main' branch)
Note: The gnu test tests/tail/tail-n0f is now being skipped but was previously passing.

mattsu2020 force-pushed the date_9959 branch from 1995e4f to 9c7f40b Compare January 13, 2026 12:31